Let's roll up our sleeves and solve this. We have 429 and we're going to multiply it by 206, essentially adding 429 to itself 206 times.
Step 1: 0 + 429 = 429
Step 2: 429 + 429 = 858
Step 3: 858 + 429 = 1287
Step 4: 1287 + 429 = 1716
Step 5: 1716 + 429 = 2145
Step 6: 2145 + 429 = 2574
Step 7: 2574 + 429 = 3003
Step 8: 3003 + 429 = 3432
Step 9: 3432 + 429 = 3861
Step 10: 3861 + 429 = 4290
Step 11: 4290 + 429 = 4719
Step 12: 4719 + 429 = 5148
Step 13: 5148 + 429 = 5577
Step 14: 5577 + 429 = 6006
Step 15: 6006 + 429 = 6435
Step 16: 6435 + 429 = 6864
Step 17: 6864 + 429 = 7293
Step 18: 7293 + 429 = 7722
Step 19: 7722 + 429 = 8151
Step 20: 8151 + 429 = 8580
Step 21: 8580 + 429 = 9009
Step 22: 9009 + 429 = 9438
Step 23: 9438 + 429 = 9867
Step 24: 9867 + 429 = 10296
Step 25: 10296 + 429 = 10725
Step 26: 10725 + 429 = 11154
Step 27: 11154 + 429 = 11583
Step 28: 11583 + 429 = 12012
Step 29: 12012 + 429 = 12441
Step 30: 12441 + 429 = 12870
Step 31: 12870 + 429 = 13299
Step 32: 13299 + 429 = 13728
Step 33: 13728 + 429 = 14157
Step 34: 14157 + 429 = 14586
Step 35: 14586 + 429 = 15015
Step 36: 15015 + 429 = 15444
Step 37: 15444 + 429 = 15873
Step 38: 15873 + 429 = 16302
Step 39: 16302 + 429 = 16731
Step 40: 16731 + 429 = 17160
Step 41: 17160 + 429 = 17589
Step 42: 17589 + 429 = 18018
Step 43: 18018 + 429 = 18447
Step 44: 18447 + 429 = 18876
Step 45: 18876 + 429 = 19305
Step 46: 19305 + 429 = 19734
Step 47: 19734 + 429 = 20163
Step 48: 20163 + 429 = 20592
Step 49: 20592 + 429 = 21021
Step 50: 21021 + 429 = 21450
Step 51: 21450 + 429 = 21879
Step 52: 21879 + 429 = 22308
Step 53: 22308 + 429 = 22737
Step 54: 22737 + 429 = 23166
Step 55: 23166 + 429 = 23595
Step 56: 23595 + 429 = 24024
Step 57: 24024 + 429 = 24453
Step 58: 24453 + 429 = 24882
Step 59: 24882 + 429 = 25311
Step 60: 25311 + 429 = 25740
Step 61: 25740 + 429 = 26169
Step 62: 26169 + 429 = 26598
Step 63: 26598 + 429 = 27027
Step 64: 27027 + 429 = 27456
Step 65: 27456 + 429 = 27885
Step 66: 27885 + 429 = 28314
Step 67: 28314 + 429 = 28743
Step 68: 28743 + 429 = 29172
Step 69: 29172 + 429 = 29601
Step 70: 29601 + 429 = 30030
Step 71: 30030 + 429 = 30459
Step 72: 30459 + 429 = 30888
Step 73: 30888 + 429 = 31317
Step 74: 31317 + 429 = 31746
Step 75: 31746 + 429 = 32175
Step 76: 32175 + 429 = 32604
Step 77: 32604 + 429 = 33033
Step 78: 33033 + 429 = 33462
Step 79: 33462 + 429 = 33891
Step 80: 33891 + 429 = 34320
Step 81: 34320 + 429 = 34749
Step 82: 34749 + 429 = 35178
Step 83: 35178 + 429 = 35607
Step 84: 35607 + 429 = 36036
Step 85: 36036 + 429 = 36465
Step 86: 36465 + 429 = 36894
Step 87: 36894 + 429 = 37323
Step 88: 37323 + 429 = 37752
Step 89: 37752 + 429 = 38181
Step 90: 38181 + 429 = 38610
Step 91: 38610 + 429 = 39039
Step 92: 39039 + 429 = 39468
Step 93: 39468 + 429 = 39897
Step 94: 39897 + 429 = 40326
Step 95: 40326 + 429 = 40755
Step 96: 40755 + 429 = 41184
Step 97: 41184 + 429 = 41613
Step 98: 41613 + 429 = 42042
Step 99: 42042 + 429 = 42471
Step 100: 42471 + 429 = 42900
Step 101: 42900 + 429 = 43329
Step 102: 43329 + 429 = 43758
Step 103: 43758 + 429 = 44187
Step 104: 44187 + 429 = 44616
Step 105: 44616 + 429 = 45045
Step 106: 45045 + 429 = 45474
Step 107: 45474 + 429 = 45903
Step 108: 45903 + 429 = 46332
Step 109: 46332 + 429 = 46761
Step 110: 46761 + 429 = 47190
Step 111: 47190 + 429 = 47619
Step 112: 47619 + 429 = 48048
Step 113: 48048 + 429 = 48477
Step 114: 48477 + 429 = 48906
Step 115: 48906 + 429 = 49335
Step 116: 49335 + 429 = 49764
Step 117: 49764 + 429 = 50193
Step 118: 50193 + 429 = 50622
Step 119: 50622 + 429 = 51051
Step 120: 51051 + 429 = 51480
Step 121: 51480 + 429 = 51909
Step 122: 51909 + 429 = 52338
Step 123: 52338 + 429 = 52767
Step 124: 52767 + 429 = 53196
Step 125: 53196 + 429 = 53625
Step 126: 53625 + 429 = 54054
Step 127: 54054 + 429 = 54483
Step 128: 54483 + 429 = 54912
Step 129: 54912 + 429 = 55341
Step 130: 55341 + 429 = 55770
Step 131: 55770 + 429 = 56199
Step 132: 56199 + 429 = 56628
Step 133: 56628 + 429 = 57057
Step 134: 57057 + 429 = 57486
Step 135: 57486 + 429 = 57915
Step 136: 57915 + 429 = 58344
Step 137: 58344 + 429 = 58773
Step 138: 58773 + 429 = 59202
Step 139: 59202 + 429 = 59631
Step 140: 59631 + 429 = 60060
Step 141: 60060 + 429 = 60489
Step 142: 60489 + 429 = 60918
Step 143: 60918 + 429 = 61347
Step 144: 61347 + 429 = 61776
Step 145: 61776 + 429 = 62205
Step 146: 62205 + 429 = 62634
Step 147: 62634 + 429 = 63063
Step 148: 63063 + 429 = 63492
Step 149: 63492 + 429 = 63921
Step 150: 63921 + 429 = 64350
Step 151: 64350 + 429 = 64779
Step 152: 64779 + 429 = 65208
Step 153: 65208 + 429 = 65637
Step 154: 65637 + 429 = 66066
Step 155: 66066 + 429 = 66495
Step 156: 66495 + 429 = 66924
Step 157: 66924 + 429 = 67353
Step 158: 67353 + 429 = 67782
Step 159: 67782 + 429 = 68211
Step 160: 68211 + 429 = 68640
Step 161: 68640 + 429 = 69069
Step 162: 69069 + 429 = 69498
Step 163: 69498 + 429 = 69927
Step 164: 69927 + 429 = 70356
Step 165: 70356 + 429 = 70785
Step 166: 70785 + 429 = 71214
Step 167: 71214 + 429 = 71643
Step 168: 71643 + 429 = 72072
Step 169: 72072 + 429 = 72501
Step 170: 72501 + 429 = 72930
Step 171: 72930 + 429 = 73359
Step 172: 73359 + 429 = 73788
Step 173: 73788 + 429 = 74217
Step 174: 74217 + 429 = 74646
Step 175: 74646 + 429 = 75075
Step 176: 75075 + 429 = 75504
Step 177: 75504 + 429 = 75933
Step 178: 75933 + 429 = 76362
Step 179: 76362 + 429 = 76791
Step 180: 76791 + 429 = 77220
Step 181: 77220 + 429 = 77649
Step 182: 77649 + 429 = 78078
Step 183: 78078 + 429 = 78507
Step 184: 78507 + 429 = 78936
Step 185: 78936 + 429 = 79365
Step 186: 79365 + 429 = 79794
Step 187: 79794 + 429 = 80223
Step 188: 80223 + 429 = 80652
Step 189: 80652 + 429 = 81081
Step 190: 81081 + 429 = 81510
Step 191: 81510 + 429 = 81939
Step 192: 81939 + 429 = 82368
Step 193: 82368 + 429 = 82797
Step 194: 82797 + 429 = 83226
Step 195: 83226 + 429 = 83655
Step 196: 83655 + 429 = 84084
Step 197: 84084 + 429 = 84513
Step 198: 84513 + 429 = 84942
Step 199: 84942 + 429 = 85371
Step 200: 85371 + 429 = 85800
Step 201: 85800 + 429 = 86229
Step 202: 86229 + 429 = 86658
Step 203: 86658 + 429 = 87087
Step 204: 87087 + 429 = 87516
Step 205: 87516 + 429 = 87945
Step 206: 87945 + 429 = 88374

So, 429*206 = 88374